Patents by Inventor Takayuki Mimura

Takayuki Mimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200301128
    Abstract: A moving object imaging device is provided in which an optical axis of a camera is changed by a plurality of movable mirrors having different sizes, and which not only improves image quality but also maintains tracking performance.
    Type: Application
    Filed: February 2, 2018
    Publication date: September 24, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Daisuke MATSUKA, Masahiro MIMURA, Kazuhiko HINO, Takayuki FUJIMURA
  • Publication number: 20190306414
    Abstract: Provided is a moving object imaging system including: an imager that captures an image of a moving object and outputs captured image data; a deflector that changes a deflection angle of an optical axis of the imager by rotating a reflecting mirror; a housing that supports the deflector; a posture change detector that detects change in posture of the housing; and a control unit that controls a deflection angle of the deflector in accordance with a detection result of the posture change detector.
    Type: Application
    Filed: September 24, 2018
    Publication date: October 3, 2019
    Inventors: Daisuke MATSUKA, Masahiro MIMURA, Kazuhiko HINO, Takayuki FUJIMURA
  • Publication number: 20190306427
    Abstract: Provided is a moving object imaging apparatus including: an imager that captures an image of a moving object; a first housing that has the imager fixed therein; a first reflecting mirror and a second reflecting mirror that are disposed on an optical axis of the imager; a second housing that houses the first reflecting mirror and the second reflecting mirror; a first deflector that is provided in the second housing and deflects the optical axis of the imager by rotating the first reflecting mirror; and a first rotator that rotates the second housing around the optical axis of the imager with respect to the first housing. A rotation axis of the first deflector and a rotation axis of the first rotator are parallel to each other.
    Type: Application
    Filed: September 24, 2018
    Publication date: October 3, 2019
    Inventors: Daisuke MATSUKA, Masahiro MIMURA, Kazuhiko HINO, Takayuki FUJIMURA
  • Patent number: 9798120
    Abstract: A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power, and includes an aperture stop which is disposed between the second lens unit and the fourth lens unit, and the first lens unit includes a negative lens and a plurality of positive lenses, and at the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, and a distance between the third lens unit and the fourth lens unit changes, and the zoom lens satisfies predetermined conditional expressions.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: October 24, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Patent number: 9389401
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: July 12, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Keigo Matsuo, Takayuki Mimura, Kanato Adachi, Hisashi Goto
  • Publication number: 20150370050
    Abstract: A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power, and includes an aperture stop which is disposed between the second lens unit and the fourth lens unit, and the first lens unit includes a negative lens and a plurality of positive lenses, and at the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, and a distance between the third lens unit and the fourth lens unit changes, and the zoom lens satisfies predetermined conditional expressions.
    Type: Application
    Filed: September 2, 2015
    Publication date: December 24, 2015
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Patent number: 9158099
    Abstract: A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power, and includes an aperture stop which is disposed between the second lens unit and the fourth lens unit, and the first lens unit includes a negative lens and a plurality of positive lenses, and at the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, and a distance between the third lens unit and the fourth lens unit changes, and the zoom lens satisfies predetermined conditional expressions.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: October 13, 2015
    Assignee: OLYMPUS CORPORATION
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Patent number: 9088724
    Abstract: During zooming from the wide angle end to the telephoto end, the distance between the first lens unit having a positive refractive power and the second lens unit having a negative refractive power, the distance between the second lens unit and the third lens unit having a positive refractive power, and the distance between the third lens unit and the fourth lens unit having a negative refractive power vary. In zooming from the wide angle end to the telephoto end, the first lens unit is located closer to the object side at the telephoto end than at the wide angle end. The first lens unit consists of two lenses including a negative lens and a positive lens. The first lens unit has at least one aspheric surface in the optical path. The zoom lens satisfies the following conditional expression (1): 0.5<(LTLt/?rear)/FLG1<1.0??(1).
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: July 21, 2015
    Assignees: OLYMPUS CORPORATION, OLYMPUS IMAGING CORP.
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Publication number: 20150085374
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 26, 2015
    Applicant: OLYMPUS CORPORATION
    Inventors: Keigo MATSUO, Takayuki MIMURA, Kanato ADACHI, Hisashi GOTO
  • Patent number: 8917455
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: December 23, 2014
    Assignee: Olympus Corporation
    Inventors: Keigo Matsuo, Takayuki Mimura, Kanato Adachi, Hisashi Goto
  • Publication number: 20140211074
    Abstract: A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power, and includes an aperture stop which is disposed between the second lens unit and the fourth lens unit, and the first lens unit includes a negative lens and a plurality of positive lenses, and at the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, and a distance between the third lens unit and the fourth lens unit changes, and the zoom lens satisfies predetermined conditional expressions.
    Type: Application
    Filed: October 15, 2013
    Publication date: July 31, 2014
    Applicants: OLYMPUS IMAGING CORP., OLYMPUS CORPORATION
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Patent number: 8767312
    Abstract: In an image forming optical system which includes in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, a refractive index for a d-line of a positive single lens having the largest refractive power among all lenses in the second lens group, is the smallest of a refractive index of lenses in the second lens group.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: July 1, 2014
    Assignee: Olympus Corporation
    Inventors: Kanato Adachi, Takayuki Mimura
  • Patent number: 8767311
    Abstract: A zoom lens system according to the present invention includes a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a fourth lens group with negative refractive power which are arranged in turn from the object side toward the image side, and the zoom lens system is formed so that, in performing a zooming operation from the wide angle end position to the telephoto end position, the first lens group keeps still, the distance between the first and second lens groups becomes small, the distance between the second and third lens groups becomes wide, and the distance between the third and fourth lens groups becomes small.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: July 1, 2014
    Assignee: Olympus Corporation
    Inventors: Takayuki Mimura, Yoshihiro Uchida
  • Publication number: 20140139718
    Abstract: A zoom lens system according to the present invention includes a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a fourth lens group with negative refractive power which are arranged in turn from the object side toward the image side, and the zoom lens system is formed so that, in performing a zooming operation from the wide angle end position to the telephoto end position, the first lens group keeps still, the distance between the first and second lens groups becomes small, the distance between the second and third lens groups becomes wide, and the distance between the third and fourth lens groups becomes small.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 22, 2014
    Applicant: Olympus Corporation
    Inventors: Takayuki Mimura, Yoshihiro Uchida
  • Publication number: 20140125827
    Abstract: During zooming from the wide angle end to the telephoto end, the distance between the first lens unit having a positive refractive power and the second lens unit having a negative refractive power, the distance between the second lens unit and the third lens unit having a positive refractive power, and the distance between the third lens unit and the fourth lens unit having a negative refractive power vary. In zooming from the wide angle end to the telephoto end, the first lens unit is located closer to the object side at the telephoto end than at the wide angle end. The first lens unit consists of two lenses including a negative lens and a positive lens. The first lens unit has at least one aspheric surface in the optical path. The zoom lens satisfies the following conditional expression (1): 0.5<(LTLt/?rear)/FLG1<1.0??(1).
    Type: Application
    Filed: August 29, 2013
    Publication date: May 8, 2014
    Applicants: OLYMPUS IMAGING CORP., OLYMPUS CORPORATION
    Inventors: Takayuki Mimura, Masahiro Imamura, Takahiro Amanai
  • Publication number: 20140078375
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Application
    Filed: October 2, 2013
    Publication date: March 20, 2014
    Applicant: OLYMPUS CORPORATION
    Inventors: Keigo MATSUO, Takayuki MIMURA, Kanato ADACHI, Hisashi GOTO
  • Patent number: 8611017
    Abstract: A zoom lens system according to the present invention includes a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a fourth lens group with negative refractive power which are arranged in turn from the object side toward the image side, and the zoom lens system is formed so that, in performing a zooming operation from the wide angle end position to the telephoto end position, the first lens group keeps still, the distance between the first and second lens groups becomes small, the distance between the second and third lens groups becomes wide, and the distance between the third and fourth lens groups becomes small.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: December 17, 2013
    Assignee: Olympus Corporation
    Inventors: Takayuki Mimura, Yoshihiro Uchida
  • Publication number: 20130299308
    Abstract: A letter processing apparatus has a first transporting passage, a first detection unit, a second transporting passage, a second detection unit, a third transporting passage, and a sorting control unit. The first detection unit detects the letter transported in the first transporting passage. The second detection unit detects the letter transported in the second transporting passage. The third transporting passage causes the letter to pass. The sorting control unit directs a first letter to the first transporting passage and directs a second letter transported after the first letter to the second transporting passage. On the basis of the inter-letter distance between the two letters being transported, the transporting speed of each letter, and the preparation time from end time for the first detection to the start time of the second detection, a third letter is sorted to the first transporting passages, the second transporting passages or the third transporting passage.
    Type: Application
    Filed: April 23, 2013
    Publication date: November 14, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Takayuki MIMURA
  • Patent number: 8564888
    Abstract: A variable power optical system includes, in order from the object side, a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power. The variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element. The second lens element has a convex shape on the object side. The final lens group includes a positive lens. The variable power optical system satisfies the following conditions: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.0 where VdLg is the Abbe number of the positive lens of the final lens group with respect to the d line, R2a is the curvature radius of the object-side surface of the second lens element, and R2b is the curvature radius of the image-side surface of the third lens element.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: October 22, 2013
    Assignee: Olympus Corporation
    Inventors: Keigo Matsuo, Takayuki Mimura, Kanato Adachi, Hisashi Goto
  • Publication number: 20120176529
    Abstract: A variable power optical system includes, in order from the object side, a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power. The variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element. The second lens element has a convex shape on the object side. The final lens group includes a positive lens. The variable power optical system satisfies the following conditions: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.0 where VdLg is the Abbe number of the positive lens of the final lens group with respect to the d line, R2a is the curvature radius of the object-side surface of the second lens element, and R2b is the curvature radius of the image-side surface of the third lens element.
    Type: Application
    Filed: March 13, 2012
    Publication date: July 12, 2012
    Applicant: OLYMPUS CORPORATION
    Inventors: Keigo MATSUO, Takayuki MIMURA, Kanato ADACHI, Hisashi GOTO